How to add another maintainer?

1

I want to the author of PR[1] to the project. Which is the proper way?

[1] Update runtime, make use of Zypak by lionirdeadman · Pull Request #5 · flathub/net.xmind.ZEN · GitHub

2

Here is good! I have done what you asked for. Update runtime, make use of Zypak by lionirdeadman · Pull Request #5 · flathub/net.xmind.ZEN · GitHub